Siemens 3RH2140-1AK60 Contactor

Siemens 3RH2140-1AK60 Contactor Relay is a compact four-pole control device in the S00 frame designed to switch line-side loads with a 110 V AC coil (50 Hz) or 120 V AC (60 Hz). It features four normally open contacts and a main-circuit rating up to 690 V AC and 10 A per pole, making it suitable for motor starters, conveyors, fans and pumps in control panels. Wiring is via screw terminals for secure field connections, and Siemens rates the unit for high durability with an estimated mechanical switching life of up to 30 million cycles. With its small footprint and compatible coil voltages, this contactor integrates easily into automation schemes that use 110/120 VAC control signals and provides reliable isolation between control logic and higher-power circuits.